With MPC-HC and ffdshow I have basically two options: (1) use the internal MPC-HC filters to decode the movies and use ffdshow just for scaling, etc. or (2) disable all internal MPC-HC filters and use ffdshow for decoding too.

My question is, if I want the best PQ, which way should I go? What option are you using? I would really appreciate any hints and infos!

With MPC-HC and ffdshow I have basically two options: (1) use the internal MPC-HC filters to decode the movies and use ffdshow just for scaling, etc. or (2) disable all internal MPC-HC filters and use ffdshow for decoding too.

I'm missing something. If you are using MPC-HC internal filter then how is ffdshow in the loop? Or are you using ffdshow and setting the MPC-HC standalone filter in ffdshow?

I prefer not to use ffdshow as it stops DXVA, adds a layer of complexity, and I find MPC-HC bicubic scaling satisfactory (although I don't know how much better you can get). The only other adjustments I would want are colour management but no player/filter does that now to my knowledge.